28078735533 has 4 divisors (see below), whose sum is σ = 37438314048. Its totient is φ = 18719157020.

The previous prime is 28078735519. The next prime is 28078735537. The reversal of 28078735533 is 33553787082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28078735533 - 2¹⁸ = 28078473389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28078735537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4679789253 + ... + 4679789258.

It is an arithmetic number, because the mean of its divisors is an integer number (9359578512).

Almost surely, 2^28078735533 is an apocalyptic number.

It is an amenable number.

28078735533 is a deficient number, since it is larger than the sum of its proper divisors (9359578515).

28078735533 is an equidigital number, since it uses as much as digits as its factorization.

28078735533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9359578514.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 28078735533 in words is "twenty-eight billion, seventy-eight million, seven hundred thirty-five thousand, five hundred thirty-three".